When calculating the length of O-rings, it is necessary to maintain the consistency of units. Under normal circumstances, millimeters or inches are used as units of length. If the units of the outer diameter and the inner diameter are different, unit conversion is required to ensure the accuracy of the calculation results.

The specifications and dimensions of O-rings mainly include inner diameter, cross-sectional diameter (also known as wire diameter), inner diameter of the groove, outer diameter of the groove, depth and width of the groove, etc. Here are some common examples of O-ring specifications and dimensions:

The sealing leakage condition of the hydraulic system is a complex issue that requires meticulous attention. Leakage in hydraulic systems is mainly divided into leakage at fixed seals and leakage at moving seals. Leakage at fixed sealing points mainly occurs at the bottom of the cylinder, the connection points of various pipe joints, etc. The leakage at the moving seal is mainly concentrated in the piston rod area of the cylinder, the valve stem of the multi-way valve and other parts.

Mechanical seals are one of the precise and structurally complex mechanical basic components, and they are key parts of various pumps, reaction synthesis kettles, turbine compressors, submersible motors and other equipment. Its sealing performance and service life depend on many factors, such as model selection, machine accuracy, correct installation and use, etc.